EUVD-2026-50215
GHSA-fvjx-r757-3r6r
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
PR:H confirmed by requirement for an authenticated admin role; I:H reflects full control over organization authentication trust chain; C:L for incidental org metadata exposure; A:N as no availability impact exists.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Lifecycle Timeline
2DescriptionCVE.org
Keycloak provides a way to manage identity providers and organizations through its administrative API. A flaw was discovered where an administrator with permission to manage identity providers could link a new provider to an organization without having the required permissions to manage that organization. This could allow an unauthorized administrator to influence how users log into specific organizations.
AnalysisAI
Missing authorization in Keycloak's administrative API allows a scoped administrator to exceed their privilege boundary by linking identity providers to organizations they are not authorized to manage. Affected deployments include Red Hat Build of Keycloak, Red Hat Single Sign-On 7, and related Red Hat products. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated Keycloak administrator account that has been granted the 'manage-identity-providers' realm role or an equivalent scoped permission. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 5.5 (Medium) reflects the high privilege requirement (PR:H), which significantly limits the attack surface to already-privileged administrators. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An adversary who has gained control of a Keycloak administrator account scoped only to identity provider management - for example, a federated admin or a compromised service account - calls the administrative API endpoint to link a newly registered, attacker-controlled SAML or OIDC identity provider to a target organization. Keycloak processes the request without verifying organization-level authorization, completing the linkage. … |
| Remediation | Patch availability per vendor advisory is indicated by Red Hat's CVE page at https://access.redhat.com/security/cve/CVE-2026-18201, but no specific patched release version was confirmed in the available input data - consult the Red Hat advisory directly for exact fixed versions before upgrading. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
View allVendor StatusVendor
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